Practicing a record-and-replay system on USRP

Authors:
Jian Chen;Shengli Zhang;Hui Wang;Xiufeng Zhang
Affiliations:
College of Information and Engineering, Shenzhen University, Shenzhen, China;College of Information and Engineering, Shenzhen University, Shenzhen, China;College of Information and Engineering, Shenzhen University, Shenzhen, China;Corad Technology Inc., Shenzhen, China
Venue:
Proceedings of the second workshop on Software radio implementation forum
Year:
2013

Citing 2
Cited 0

Embracing wireless interference: analog network coding

Proceedings of the 2007 conference on Applications, technologies, architectures, and protocols for computer communications
Software-defined GPS receiver on USRP-platform

Journal of Network and Computer Applications

Quantified Score

Hi-index	0.00

Visualization

Abstract

Signal recording and replaying is widely used in data analysis, device test, etc. Motivated by this fact, our paper focuses on developing a low-cost record-and-replay prototype based on USRP (Universal Software Radio Peripheral). In particular, we designed and developed a GPS (Global Positioning System) record-and-replay system, which can sample the real GPS signal and then output the analog GPS signal to other devices with cable. In this prototype, we first design the record flow graph and the replay flow graph for USRP, which is verified in the FM band with the FM (Frequency Modulation) broadcasting. After that, we replace the passive antenna with one active antenna suit to amplify the small power GPS signal, lower the quantization bits to reduce the data rate in order to support the wide bandwidth of the GPS signal. Finally, our GPS record-and-replay system is tested and verified by a real GPS receiver. The good performance of our GPS record-and-replay system showed that USRPs can not only used in academia as experiment devices but also used in industry as low-cost wireless auxiliary devices.